Sounds like a defective control panel . Turn the power off to dishwasher remove the torx screws holding the inner door panel on . Check the area where the control panels ribbon connector enters the touch pad area . There is a slot in the control panel plastic . Look for discoloration in the ribbon connector .If its brownish the control panel is bad . I was told by the tech line to silicone the area in question to stop any moisture or water vapor from getting into this area . Not a cheap part unfortunately .